[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3Z0S9z84iByqoYG1xq-OBv2_o7QBxsTGX4RL7N8wfc4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-11-21 13:45:07",107454354,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8a7cc188187b644414417bd8b04800a7.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F30fcb1a12adfec3901e8a3b16d673bd9.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3749e2ebfe1ffbceac64f0e0a3c59e99.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe0fed55b444f2e1e06a5d6bdc4f4b1c4.png\">",{"courseId":13,"courseImg":14,"courseName":15},"90ebc3f5d9ba59bab2d074eb6a674472","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8b9eb5a12009d1953fbb3342da86217c.jpg","大学物理A1(2023版)","【单选题】如图所示,一均匀带电+Q的球体外罩一个内外半径分别为R1和R2的同心金属球壳.若以无限远处为电势零点,则在R1<r< R2的区域内\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffbbb523a2e119d5c86d99038a78e6e88.png\">",[18,30,40,50,60,69,79,87,90,100],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-11-23 22:52:49",107454345,[23,24,25,26],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcca0a7e96c55865bdb87904f759d4338.png\">","1","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F254f47efecb9a5eab2b2ccf94fc73c02.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbb601df42447a2574343b4f164ef31fc.png\">","半径分别为R及r的两个球形导体(R>r),相距很远,今用细导线连接起来,并使两导体带电,电势为V,则两球表面电荷面密度之比\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe22bb122b89bdc47eb841aef70c712b2.png\">为","v1",0,{"answer":31,"createTime":32,"id":33,"options":34,"question":39,"source":28,"type":29},[],"2023-11-23 22:52:51",107454347,[35,36,37,38],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0a8880d88cf358bed492cc8ebfb0a900.png\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F017814f4ce75586a5c0fff475cebcc6e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F77d29cc4d9b8fecf2cc4f879e590cadf.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F85e085e139ff7f54032610a629937474.png\">","0","【单选题】一个未带电的空腔导体球壳,内半径为R.在腔内离球心的距离为d处(d<R),固定一电量为+q的点电荷,用导线把球壳接地后,再把地线撤去.选无穷远处为电势零点,则球心O处的电势为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F142a26ca03a015eae7d57d3a3cdeea72.png\">",{"answer":41,"createTime":42,"id":43,"options":44,"question":49,"source":28,"type":29},[],"2023-11-23 22:52:52",107454348,[45,46,47,48],"既无自由电荷,也无束缚电荷","没有自由电荷","自由电荷的代数和为零","自由电荷和束缚电荷的代数和为零","【单选题】在某静电场中作一封闭曲面S,若有\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd3790799c8295412b8a0afbfe6bc51a3.png\">,则S面内必定",{"answer":51,"createTime":52,"id":53,"options":54,"question":59,"source":28,"type":29},[],"2023-11-23 22:52:53",107454349,[55,56,57,58],"UB > UA ¹ 0","UB < UA","UB = UA","UB < UA = 0","A、B是两块不带电的导体,放在一带正电导体的电场中,如图6.1所示.设无限远处为电势零点,A的电势为UA,B的电势为UB,则: \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2c486cbad42bd20f29ca0cbbce789795.png\">",{"answer":61,"createTime":52,"id":62,"options":63,"question":68,"source":28,"type":29},[],107454351,[64,65,66,67],"s1 = -s , s2 = +s","s1 = -s\u002F2 , s2 = +s\u002F2","s1 = -s , s2 = 0","s1 = -s\u002F2 , s2 = -s \u002F2","一"无限大"均匀带电平面A,其附近放一与它平行的有一定厚度的"无限大"平面导体板B,如图所示.已知A上的电荷面密度为s,则在导体板B的两个表面1和2上的感应电荷面密度为:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbb71c664eb66003adbfc85a4bae642b4.png\">",{"answer":70,"createTime":71,"id":72,"options":73,"question":78,"source":28,"type":29},[],"2023-11-23 22:52:54",107454352,[74,75,76,77],"该导体上全部电荷在该处产生的场","以上说法都不对","这一组导体表面的所有电荷在该处产生的场","该处无穷小面元上的电荷产生的场","【单选题】真空中有一组带电导体,其中某一导体表面某处电荷面密度为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F031b6cb559fea5c8f0c7095f3603ddf0.png\">,该处表面附近的场强大小为E,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5ef4f1c989e4ca253f251750d0657d80.png\">,E是",{"answer":80,"createTime":5,"id":81,"options":82,"question":86,"source":28,"type":29},[],107454353,[38,83,84,85],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff43498fd6f1b5809837ac835428d1869.png\">","以上答案都不对","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc86fa74211ab58cd7e5512eec4e3f4a4.png\">","【单选题】如图所示,一金属球壳内有一点电荷+q,+q不在球心处,则球壳外P点场强的大小为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faa7ede9f411e8c68d3ffeae1d7c6c593.png\">",{"answer":88,"createTime":5,"id":6,"options":89,"question":16,"source":28,"type":29},[],[8,9,10,11],{"answer":91,"createTime":92,"id":93,"options":94,"question":99,"source":28,"type":29},[],"2023-11-23 22:52:56",107454355,[95,96,97,98],"前者减小后者增加","前者增加后者减小","都增加","都减小","【单选题】对电容器充电后不断开电源和充电后断开电源两种情况,分别用力将电容器中的介质拉出,电容器中储存的静电能变化为",{"answer":101,"createTime":5,"id":102,"options":103,"question":108,"source":28,"type":29},[],107454356,[104,105,106,107],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1516e653230fc1ed1809903247423c5a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F87f108d00c4023b9573db219ca14962b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8d2d673df539bd0f1cf5ba7f6842eb61.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F99630e8ac1eb6189855fe876ac69234b.png\">","【单选题】一个带电量为q,半径为R的薄金属球壳里充满了相对电容率为er的均匀电介质,球壳外为真空,则球壳的电势为"]